Use Executable_cpp instead of default gcc as preprocessor for windres

...to avoid having GCC as yet another prerequisite on Windows.

Cygwin 'man windres' states:  "The default preprocessor argument is 'gcc -E
-xc-header -DRC_INVOKED'."  Of those arguments, -E and -xc-header are not
relevant for Executable_cpp, so only -DRC_INVOKED is kept.

Additional arguments that turned out to be necessary are:

-I$(ATL_INCLUDE)
So that
#include <afxres.h>
in workdir/UnpackedTarball/libgpg-error/src/versioninfo.rc is found.  (Not sure
how the original code using gcc found this.)

-+
So that using a C++ style comment in
#include "winres.h"           // extract from windows header
in afxres.h does not cause a "Syntax error in #include" from Executable_cpp.

$(SOLARINC)
So that
#include "winres.h"           // extract from windows header
in afxres.h is found.  (Not sure how the original code using gcc found this.)

-DWINAPI_FAMILY=0
Because dlgs.h (included indirectly from afxres.h) contains
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
[...]
typedef struct tagCRGB
{
BYTE    bRed;
BYTE    bGreen;
BYTE    bBlue;
BYTE    bExtra;
} CRGB;           /* RGB Color */
and the WINAPI_FAMILY_PARTITION conditional (defined in winapifamily.h) would be
true, causing the output to contain those "typedef struct tagCRGB ..." tokens
that windres apparently doesn't expect (failing with "windres: can't open file
`tagCRGB': No such file or directory").  (Not sure how the original code using
gcc avoided this.)

Change-Id: Ic2d031c72025f2e9dbde26c774215d2d2d0a43a9
Reviewed-on: https://gerrit.libreoffice.org/45334
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>

0 files changed, 0 insertions, 0 deletions